XML 14 R33.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments and Contingencies - Guarantees and Warranties (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Jan. 26, 2013
Apr. 28, 2012
Guarantor Obligations    
Product Warranty Accrual $ 22,072 $ 22,215
Movement in Standard Product Warranty Accrual    
Warranties issued during the period 9,183  
Settlements made during the period (10,048)  
Changes in accrued warranty costs for pre-existing warranties during the period, including expirations 722  
Minimum
   
Warranties:    
Standard parts warranty period 1 year  
Installation warranty period 1 year  
Maximum
   
Warranties:    
Standard parts warranty period 5 years  
Installation warranty period 10 years  
Repurchase of equipment guarantees
   
Guarantees:    
Guarantees total obligations 1,285 1,285
Repurchase of equipment guarantees | Accrued expenses
   
Guarantees:    
Guarantee liability 185  
Performance guarantees | Letter of credit and bank guarantees agreements
   
Guarantees:    
Performance guarantees outstanding 2,743  
Performance guarantees | Surety bonds
   
Guarantees:    
Performance guarantees outstanding $ 21,557